How many periods do women have?
Periods happen to women from menarche, the beginning of having periods, until menopause, which is defined as no period for 1 year. So if a woman begins her periods at age 13 she could have periods until age 50 or for 37 years. Most women have a period every month or every 28 days. Some women have their period every 26 days and other women have their period at longer intervals, up to every 34 days. What is important is that the period is regular and that it starts every month around the same time and within 5 days of the last time. Women with a regular monthly period will have 13 cycles each year of her reproductive life. A woman with regular periods could have up to 450 periods in her lifetime.
